Keep your garden and crops free from pesky birds with these Plastic Anti Pigeon Spikes! It comes with twelve pieces of spike strips! You simply need to place these spike strips on your roof or gates. Because of the spikes, birds can’t perch on them so it is less likely for them to target your crops. It comes with many strips so you can cover your entire gate or roof. Also, they are plastic which makes them more suitable for outdoor use since they won’t rust.